Pyridine-Functionalized and Metallized Meso-Macroporous Polymers for Highly Selective Capture and Catalytic Conversion of CO2 into Cyclic Carbonates
journal contributionposted on 30.11.2017 by Qin Wu, Kuan Huang, Fujian Liu, Pengfei Zhang, Lilong Jiang
Any type of content formally published in an academic journal, usually following a peer-review process.
Pyridinic nitrogen functionalized porous organic polymers (PDVB-VP-x, where x represents the volume ratio of VP/DVB) with hierarchical meso-macroporosity were template-free synthesized from solvothermal cross-linking of 4-vinylpyridine with divinylbenzene. PDVB-VP-x can be used as effective supports for metalation with Co2+ and Zn2+, giving metal@PDVB-VP-x composites. CO2 and N2 adsorption tests demonstrate that metal@PDVB-VP-x have competitive capacities for CO2 at low relative pressure of 0.15 bar (0.58–0.89 and 0.51–0.76 mmol g–1 at 0 and 25 °C) and extraordinary Ideal Adsorption Solution Theory (IAST) selectivities for CO2/N2 (84.5–96.7 at 0 °C and 130.5–163.5 at 25 °C). The metal@PDVB-VP-x composites also exhibit impressive activities in catalyzing conversion of CO2 from dilute sources (15% balanced in N2) into cyclic carbonates under ambient condition. Interestingly, the metal@PDVB-VP-x composites have excellent water-tolerant property, endowing them with potentially important applications in selective adsorption and conversion of CO2 from waste gas in the industry.